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Beolover SyncDrive: DC Platter Motor Replacement for Beogram 4002 and 4004 (Type 551x and 552x)

Late Beogram 4002 and the 4004 (Types 551x and 552x), which have DC platter motors instead of the earlier synchronous AC motors usually suff...

Wednesday, April 5, 2017

Beogram 6000 (5512): Restoration of Main PCB and a New Reservoir Capacitor

After restoring the arm lowering mechanism and the carriage of the Beogram 6000 (5512) that I am restoring right now, it was time to give the main PCB some attention and replace the electrolytic capacitors, the RPM relay and the RPM trimmers. Here are some impressions:

This shows the main PCB in its original condition:
and after replacing the capacitors with 105C grade Japanese units and putting in a new relay and multi-turn RPM trimmers:
This shows the detail around the relay and the trimmers:
The Beolover relays are drop in replacements for the original Siemens relay (they are also available for the National relays that some Beograms feature):
After the PCB was completed I also replaced the main reservoir capacitor. This shows the original can:
and the replacement consisting of a modern capacitor and a 3D printed sleeve that makes it fit perfectly into the original clamp:
On to replacing the RPM indicator light bulbs in the control panel!








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